Intebfoiided paper package and pbocess of manufacturing same



n. w. HUDSON.

INTERFOLDED PAPER PACKAGE AND PROCESS OF MANUFACTURING SAME.

1 3 1 301 PatentedJune 14, 1921.

UNITED STATES PATENT OFFICE.

DAVID W. HUDSON, OI GREEN BAY, WISCONSIN.

inrnnfinimn runs racxaes AND PROCESS OF- MANUFACTURING SAME.

Specification of Letters Patent. Patented June 14, 1921.

' Application filed October 5, 1920. Serial No. 414,924.

, ages and Processes of Manufacturing Same,-

of which the following is a. specifioation.

My invention relates to'improvements 1n inter-folded paper packages and procemes of manufacturing the Same.

Such packages have heretofore been made by first cutting strips of paper into sheets which were wholly separated from each other and subsequently folding the sheets in such a manner that each embraced the ends of-two other sheets which were held in position merely by frictional contact with the folded sheet.

Considerable difiiculty has heretofore been experienced in handling the sheets of paper during the foldin'g'operation and preventing them from becoming displaced from the1r' proper relation to each other, either prior to their engagement with the companion folded sheets or subsequently durin the operation of packaglng the interolded sheets, or of feeding them from an interfolding machine.

The object of my invention is to provide means whereby the sheets may be sufliciently retained in proper relation to each other during theinter-folding, feeding and packaging operations to prevent displacement and insure that the completed package will have all of its sheets properly inter-folded.

A further object of my invention is to provide means for insuring the production of a perfectly interfolded package of sheets.

Further it is my object to produce an improved package in which the delivery of one sheet will more uniformly and certainly release a portion of the next sheet in a duplex series of inter-folded sheets and expose it in a position where it can be readily grasped and removed while exposing a third sheet in similar manner by partially drawing it from the package or from within a cabinet in .which the package has been placed.

In the accompanying drawing Figure 1 illustrates in perspective the various stages of my process, showing the same as it is being continuously performed for successively inter-folding sheets and for producin successive packages.

ig. 2 illustrates two successive sheets of one series in proper relation to two other sheets in a companion series, each of said sheets having dotted lines indicating the manner 1n which they are to be folded.

It W111 be observed in Fig. 2 that the sheets 1n each series are connected with each other by a narrow tongue of paper along one margin of the strip from which the sheets are out. For example: The sheets 1 and 2 illustrated in Fig. 2 are in one series, 91. e., a continuous strip of paper which has been part ally cut across at 3 leaving thesheets lntegrally connected by a narrow .tongue 4. The sheets 5 and 6 of the adjacent series or opposing series are connected with each other by similar tongues 7, these sheets belng formed by partially severing the strip of. which they are a portion and feeding them into such relation to the sheets 1 and 2 that the tongues 4 in one series are mid way between the-tongues 7 in the opposing serles. Y

The two strips of paper or series of sheets above described, are delivered from between suitable guiding or feeding devices, such for example as the rollers 10 illustrated in Fig. 1. As a sheet 1 passes from between these rollers it is tucked between a pair of folding jaws 12 and 13 conventionally illustrated in Fig. 1, the jaws receiving the paper substantially at its transverse center line and being subsequently 'closed upon it to form 'a crease. The folded halves of the sheet embrace theends of two sheets 5 and 6 in the adjacent series. These ends are tucked into the jaws simultaneously with the sheet to be folded,.preferably by a tucker blade such as indicated at 15 in Fig. 1, the connecting tongue 4: (or 7) enabling the tucker blade to carry the ends of theinterfolded sheets between the jaws with certainty, both as to the relation to the sheets to be inter-folded and as to their relation to each other, with their end margins substantially in abutting contact from the connecting tongue to the opposite side margins of the respective sheets.

Subsequently to the foldin operation above described, the feeding r0 lers .10 are moved to the dotted line position indicated in Fig. 1, and the folding operation repeated upon the sheet 5 which is tucked between jaws 17 and 18, similar tothe jaws 12 and 13, but oppositely disposed, and so positioned as to receive the sheet 5 between them substantially at its transverse center line,

. have found by and also to receive one end of the sheet 1 and the adjacent end of the succeeding sheet 2 in the series to which the sheet 1 belongs;

After each inter-folding operation, the folded sheets are ressed downwardl to form a. pile 20 and by allowin this pile to move downwardly in a curve chute 21 a continuous series of folded sheets may be delivered upon a table 23, which is referably horizontally disposed and whic suports the folded sheets, as clearl shown 111 ig. 1, in positions which fac' itate their separation at desired points indicated by the arrows 25 and 26.

I have found that the connecting tongues of a er 4 and 7 not only enable me to inter-' fol the sheets accurately and roperly with unvarying success, but that t e also hold the sheets in their proper interolded relution while the sheets are being pushed out wardly upon a table, and while they are being separated into packages at the points indicated by the arrows, and subsequently inclosed in bands or wrappers for the purpose of shipment.

Great importance is attached to the fact that the connectin tongues 4 and 7 are uniformly located a on of the strips and are 0 just sufficient width to hold the sheets'in posltion while carrying out the inter-folding process without offerin sufficient resistance to tearing strains to alfiiw more than one sheet to be pulled from the package at a time when the package is se arated in a container of ordinary type.

experiment that connectmg tongues at t e side margins of about i in width will be sufiicient for my purposes under ordinary conditions, although the width of the ton e'may some extent in accor ance with the quality of the paper, wider ton es being possible with paper that is easi y torn whereas if the paper is less easily torn the width of the ton e will be correspondingly diminishedhave also found that where the tongues are located along one side margin the exposed sheet of paper will pull obliquely thereon and the tearing operation 'Wlll commence at one side of the ton e and continuously progressively to the ot er half of it to facilitate one margin of each be varied to h side, the fibers of the pa r givin away successively and with mucli less pul upon the next succeeding sheet in the package than would be the case if} the connectiu tongues were located along the longitudinal center lines-of the respective strips.

I am therefore able to produce a much more erfect package of inter-folded sheets than as heretofore been ossible without extraordinary ex nse, and I am also able to deliver sheets om such packa es successively and uniformly as single s cats with the same certainty as heretofore in the delivery of separated sheets, but with increased certainty that the next succeeding sheet will be-drawn down so as to expose its subsequent withdrawal from thepackage or from the package containing cabinet.

1. The process of manufacturing packages of interfolded paper sheets, conslsti in uniformly slitting paper strips along transverse lines to nearly sever te strip, while leaving narrow connectin tongues along one margin of each strip mte ally connecting the sheets, and subsequent arranging the sheets in the respective series in break joint relation and folding the sheets of one series in one direction and those of the otherseries in the opposite direction, with each sheet embracing near its folding line the partially severed ends and connecting tongue of two sheets in the other series.

2. A package of interfolded paper sheets comprislng two series of sheets, mtegrally connected along one side margin by a narrow tongue, and severed from each other along a line extending from said tongue to t e opposing side margin, said sheets in each series being in break joint relation to those of the other series and folded upon them with the artially severed margins embraced along tl ie foldin line.

In testimony whereof aflix my signature in the presence of two witnesses.

DAVID W. HUDSON.

Witnesses:

Naom A; Dams, Mmma Camus. 

